Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab281a85e6b036bd…

MALICIOUS

PDF

47.1 KB Created: 2018-11-23 21:33:02 +03:00 Authoring application: QuarkXPressª: LaserWriter 8 8.5.1 (via Acrobat Distiller 3.01 for Power Macintosh)
MD5: 82b0e8466a9feae10174f0b836054cf6 SHA-1: 174163ae73a2a537519b88c08a4261eb01bc350c SHA-256: ab281a85e6b036bd7a9585cda30e7494c87294da6fe8efc5ddf675403cc81121
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file was flagged by an ML classifier and contains a large number of external links to other PDF documents hosted on the same domain. This behavior is indicative of a link farm, often used for SEO manipulation or to distribute malicious content. The document body itself is heavily obfuscated and does not provide clear textual clues, but the heuristic firings strongly suggest a malicious intent related to link distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8527

Heuristics 2

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.gorillawalker.com/the-collected-poems-of-nikos-kavadias-the-modern-greek-literature.pdf
    • http://www.gorillawalker.com/superintendent-a-novel.pdf
    • http://www.gorillawalker.com/warrior-chicks-rising-strong-beautiful-and-confident.pdf
    • http://www.gorillawalker.com/rural-development-theory-and-practice-routledge-studies-in-development-and.pdf
    • http://www.gorillawalker.com/pocket-vietnamese-dictionary-vietnamese-english-english-vietnamese-periplus-pocket-dictionaries.pdf
    • http://www.gorillawalker.com/test-success-test-taking-techniques-for-beginning-nursing-students-4th.pdf
    • http://www.gorillawalker.com/adobe.pdf
    • http://www.gorillawalker.com/the-libby-garrett-intervention-science-squad-book-2.pdf
    • http://www.gorillawalker.com/skipping-towards-gomorrah-the-seven-deadly-sins-and-the-pursuit.pdf
    • http://www.gorillawalker.com/furrow-greaney-johnson-jost-and-schwartz-law-and-health-care.pdf
    • http://www.gorillawalker.com/inside-the-human-body-magic-bus.pdf
    • http://www.gorillawalker.com/colorful-crochet-lace-22-chic-garments-accessories.pdf
    • http://www.gorillawalker.com/corpus-topographicum-indiae-antiquae-iii-indian-toponyms-in-ancient-greek.pdf
    • http://www.gorillawalker.com/2000-common-swedish-verbs-quick-reference-to-the-essential-forms.pdf
    • http://www.gorillawalker.com/a-real-winner-b1-footprint-reading-library.pdf
    • http://www.gorillawalker.com/destined-to-survive-a-dieppe-veteran-s-story-kindle-edition.pdf
    • http://www.gorillawalker.com/the-baritone-voice-kindle-edition.pdf
    • http://www.gorillawalker.com/the-cyberiad-fables-for-the-cybernetic-age-masterpieces-of-sience.pdf
    • http://www.gorillawalker.com/how-to-get-new-dental-patients-with-the-power-of.pdf
    • http://www.gorillawalker.com/grow-to-greatness-how-to-build-a-world-class-franchise.pdf
    • http://www.gorillawalker.com/for-a-few-souls-more-heaven-s-gate-trilogy.pdf
    • http://www.gorillawalker.com/landmarks-of-soviet-architecture.pdf
    • http://www.gorillawalker.com/how-to-draw-the-life-and-times-of-james-k.pdf
    • http://www.gorillawalker.com/sources-and-methods-of-historical-demography.pdf
    • http://www.gorillawalker.com/infrastructural-lives-urban-infrastructure-in-context.pdf
    • http://www.gorillawalker.com/complete-baking-with-over-400-recipes-for-pies-tarts-buns.pdf
    • http://www.gorillawalker.com/undercover-customer-100-ways-to-fix-your-broken-customer-service.pdf
    • http://www.gorillawalker.com/studies-on-texture-of-some-foods-beef-and-camel-meat.pdf
    • http://www.gorillawalker.com/maverick-maestro-mrinal-sen.pdf
    • http://www.gorillawalker.com/pericles-the-rise-and-fall-of-athenian-democracy-leaders-of.pdf
    • http://www.gorillawalker.com/world-of-warcraft-jaina-proudmoore-tides-of-war-unabridged-audible.pdf
    • http://www.gorillawalker.com/100-trait-specific-comments-a-quick-guide-for-giving-constructive.pdf
    • http://www.gorillawalker.com/principles-of-econometrics-a-modern-approach-using-eviews.pdf
    • http://www.gorillawalker.com/the-titanic-coloring-book-dover-history-coloring-book.pdf
    • http://www.gorillawalker.com/national-geographic-readers-snakes.pdf
    • http://www.gorillawalker.com/poker-secrets-from-a-poker-dealer-to-make-a-killing.pdf
    • http://www.gorillawalker.com/pale-ale-history-and-brewing-techniques-recipes-history-brewing-techniques.pdf
    • http://www.gorillawalker.com/endgame-the-zero-line-chronicles-volume-1-incite.pdf
    • http://www.gorillawalker.com/careful-what-you-wish-for-kindle-edition.pdf
    • http://www.gorillawalker.com/our-undiscovered-universe-introducing-null-physics-the-science-of-uniform.pdf
    • http://www.gorillawalker.com/pocket-vietnamese-dictionary-
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://www.aiim.org/pdfa/ns/extension/
    • http://www.aiim.org/pdfa/ns/schema#
    • http://www.aiim.org/pdfa/ns/property#
    • http://www.aiim.org/pdfa/ns/id/

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